/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package ai.platon.pulsar.persist.rdb.dao;

import com.j256.ormlite.dao.BaseDaoImpl;
import com.j256.ormlite.dao.Dao;
import com.j256.ormlite.support.ConnectionSource;
import com.j256.ormlite.table.DatabaseTableConfig;
import com.j256.ormlite.table.TableUtils;

import java.sql.SQLException;
import java.util.List;

public class OrmliteTableCreator {

    private ConnectionSource connectionSource;
    private List<Dao<?, ?>> configuredDaos;

    public OrmliteTableCreator(ConnectionSource connectionSource, OrmliteDaoFactory daoFactory) {
        this(connectionSource, daoFactory.getCreatedDaos());
    }

    public OrmliteTableCreator(ConnectionSource connectionSource, List<Dao<?, ?>> configuredDaos) {
        this.connectionSource = connectionSource;
        this.configuredDaos = configuredDaos;
        initialize();
    }

    private void initialize() {
        if (configuredDaos == null) {
            throw new IllegalStateException("configuredDaos was not set in "
                    + getClass().getSimpleName());
        }

        for (Dao<?, ?> dao : configuredDaos) {
            createTableForDao(dao);
        }
    }

    private void createTableForDao(Dao<?, ?> dao) {
        DatabaseTableConfig<?> tableConfig = getTableConfig(dao);
        createTableIfNotExists(tableConfig);
    }

    private DatabaseTableConfig<?> getTableConfig(Dao<?, ?> dao) {
        Class<?> clazz = dao.getDataClass();
        DatabaseTableConfig<?> tableConfig = null;
        if (dao instanceof BaseDaoImpl) {
            tableConfig = ((BaseDaoImpl<?, ?>) dao).getTableConfig();
        }
        if (tableConfig == null) {
            return getConfigFromClass(clazz);
        }
        return tableConfig;
    }

    private DatabaseTableConfig<?> getConfigFromClass(Class<?> clazz) {
        try {
            return DatabaseTableConfig.fromClass(connectionSource, clazz);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

    private void createTableIfNotExists(DatabaseTableConfig<?> tableConfig) {
        try {
            TableUtils.createTableIfNotExists(connectionSource, tableConfig);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
}
